• It's just one html page. With
good ol' table design and big see-me-from-afar letters. Well, digits.
• The digits, dot and minus keys enter the number to convert.
• The space clears the input.
• Backspace and Del remove the last digit/dot (backspace doesn't work if you have
a "previous" page in the browser history).
• Letters 'pntefdckTEFDCKri' modify the value. Try and see.
• No other editing means are available (except the evaluator). Z is undo!
• Control+V or just V or simply Enter paste the clipboard contents (if it's a number)
into the converter.
• The Tab key swithes between two sets of convertions/calculations.
• Keys ` and = ask for a math expression and evaluate it.
syntactic sugar: pi, PI, e, E, LN2, LN10, SQRT2 are the constants,
sin, cos, tan, asin, acos, atan,
abs, min, max, floor, ceil,
round, random are the functions. Some have one letter abbrevs. Numbers may be
in degrees (@ after the number), and such numbers are translated into radians.
360@ = 2*π.
• Factorization of big numbers may take long time. E.g. testing for primeness of 100000000000031
(that's 10^14+31) takes about 30 seconds or P-IV 1.8 GHz.
• The calendar is 'borrowed' from the Google applets.
• If the input number looks like a date (D, DD, MDD, MMDD, YMMDD, YYMMDD, YYYYMMDD),
the week day and the distanse to that date are calculated.
Years 0..39 are considered in the XXI century, 40..99 — in the XX-th.
• Stopwatch has clear-start ([), show-elapsed-time (]) and store-lap-time (\) functions.